Checkstyle error

Author: PeterBackroll

plugins/backup/backroll/src/test/java/org/apache/cloudstack/backup/BackrollBackupProviderTest.java

@@ -36,7 +36,6 @@
 import org.apache.cloudstack.backup.backroll.model.BackrollBackupMetrics;
 import org.apache.cloudstack.backup.backroll.model.BackrollOffering;
 import org.apache.cloudstack.backup.backroll.model.response.TaskState;
-import org.apache.cloudstack.backup.Backup.Metric;
 import org.apache.cloudstack.backup.Backup.RestorePoint;
 import org.apache.cloudstack.backup.dao.BackupDao;
 import org.apache.logging.log4j.Logger;